import java.util.*;
import java.util.Scanner;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: happyiu
 * Date: 2021-10-22
 * Time: 0:21
 */
public class TestDemo {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("Hello CSDN!");
    }

}




/*    public static void main99(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int a = 24;
        int b = 18;
        int c = a%b;//24 % 18 = 6
        while (c != 0) {
            a = b;//a = 18
            b = c;//b = 6
            c = a%b;//0
        }
        System.out.println("最大公约数是"+b);
    }

    public static void main88(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int i = 2;
        for (; i <= Math.sqrt(n); i++) {
            if(n % i == 0) {
                System.out.println(n+" 不是素数！");
                break;
            }
        }

        if( i > Math.sqrt(n)) {
            System.out.println(n + " 是素数！");
        }
    }

    public static void main64(String[] args) {
        Random random = new Random();
        int rand = random.nextInt(100);//[50-100)  1-101
        System.out.println("rand "+rand);
        Scanner scanner = new Scanner(System.in);
        while (true) {
            System.out.print("请输入你要猜的数字：");
            int n = scanner.nextInt();
            if(n  < rand) {
                System.out.println("猜小了");
            }else if(n == rand) {
                System.out.println("猜对了");
                break;
            }else {
                System.out.println("猜大了！");
            }
        }
    }


    public static void main99(String[] args) {

        Scanner scanner =new Scanner(System.in);
        int n = scanner.nextInt();

        Print(n);
    }

    public static void main98(String[] args) {
        //找到1-100之间  既能被3整除的数字  也能被5整除的数字
        int i = 1;
        while (i <= 100) {
            if( i % 15 != 0) {
                i++;
                continue;
            }
            System.out.println(i);
            i++;
        }
    }

    public static void main96(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int j = 1;
        int sum = 0;
        while (j <= n) {

            int i = 1;
            int ret = 1;
            while (i <= j) {
                ret = ret * i;
                i++;
            }
            sum = sum + ret;
            j++;
        }
        System.out.println(sum);
    }


    public static void main6(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int i = 1;
        int ret = 1;
        while (i <= n) {
            ret = ret * i;
            i++;
        }
        System.out.println(n+"的阶乘的值为"+ret);
    }


    public static void main5(String[] args) {
        Scanner scanner = new Scanner(System.in);//alt+回车
        int year = scanner.nextInt();

        if( (year % 100 != 0 && year % 4 == 0) || year % 400 == 0) {
            System.out.println(year+"是闰年！");
        }else {
            System.out.println(year+"不是闰年！");
        }
        scanner.close();
    }

}*/
/*    public static void main14(String[] args) {
        int a = 10;
        int b = 20;
        System.out.println(!!(a < b));
    }*/


 /*   public static  int Max(int a,int b) {

        return a>b?a:b;

    }*/